Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-3637-2017 |
Contribution of feldspar and marine organic aerosols to global ice nucleating particle concentrations | |
Vergara-Temprado, Jesus1; 39;Sullivan, Daniel2; 39;Dowd, Colin D.3 | |
2017-03-15 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:5 |
文章类型 | Article |
语种 | 英语 |
国家 | England; USA; Canada; Ireland; Italy |
英文摘要 | Ice-nucleating particles (INPs) are known to affect the amount of ice in mixed-phase clouds, thereby influencing many of their properties. The atmospheric INP concentration changes by orders of magnitude from terrestrial to marine environments, which typically contain much lower concentrations. Many modelling studies use parameterizations for heterogeneous ice nucleation and cloud ice processes that do not account for this difference because they were developed based on INP measurements made predominantly in terrestrial environments without considering the aerosol composition. Errors in the assumed INP concentration will influence the simulated amount of ice in mixed-phase clouds, leading to errors in top-of-atmosphere radiative flux and ultimately the climate sensitivity of the model. Here we develop a global model of INP concentrations relevant for mixed-phase clouds based on laboratory and field measurements of ice nucleation by K-feldspar (an ice-active component of desert dust) and marine organic aerosols (from sea spray). The simulated global distribution of INP concentrations based on these two species agrees much better with currently available ambient measurements than when INP concentrations are assumed to depend only on temperature or particle size. Underestimation of INP concentrations in some terrestrial locations may be due to the neglect of INPs from other terrestrial sources. Our model indicates that, on a monthly average basis, desert dusts dominate the contribution to the INP population over much of the world, but marine organics become increasingly important over remote oceans and they dominate over the Southern Ocean. However, day-to-day variability is important. Because desert dust aerosol tends to be sporadic, marine organic aerosols dominate the INP population on many days per month over much of the mid-and high-latitude Northern Hemisphere. This study advances our understanding of which aerosol species need to be included in order to adequately describe the global and regional distribution of INPs in models, which will guide ice nucleation researchers on where to focus future laboratory and field work. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000397928200002 |
WOS关键词 | SEA-SPRAY AEROSOL ; MIXED-PHASE CLOUDS ; THEORY-BASED PARAMETERIZATION ; MINERAL DUST ; FORMING NUCLEI ; FREEZING NUCLEI ; WATER DROPLETS ; FUNGAL SPORES ; LABORATORY EXPERIMENTS ; KAOLINITE PARTICLES |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/28351 |
专题 | 地球科学 |
作者单位 | 1.Univ Leeds, Sch Earth & Environm, Inst Climate & Atmospher Sci, Woodhouse Lane, Leeds LS2 9JT, W Yorkshire, England; 2.Univ Exeter, Coll Life & Environm Sci, Penryn TR10 9EZ, England; 3.Harvard Univ, Harvard Med Sch, Dept Syst Biol, Boston, MA 02115 USA; 4.Univ British Columbia, Dept Chem, Vancouver, BC V6T 1Z1, Canada; 5.Pacific Northwest Natl Lab, Atmospher Sci & Global Change Div, POB 999 MS K-24, Richland, WA 99352 USA; 6.Natl Univ Ireland Galway, Ryan Inst, Sch Phys, Galway, Ireland; 7.Natl Univ Ireland Galway, Ryan Inst, Ctr Climate & Air Pollut Studies, Galway, Ireland; 8.Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA; 9.Italian Natl Res Council CNR, Inst Environm Sci & Climate ISAC, Via P Gobetti 101, I-40129 Bologna, Italy |
推荐引用方式 GB/T 7714 | Vergara-Temprado, Jesus,39;Sullivan, Daniel,39;Dowd, Colin D.. Contribution of feldspar and marine organic aerosols to global ice nucleating particle concentrations[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(5). |
APA | Vergara-Temprado, Jesus,39;Sullivan, Daniel,&39;Dowd, Colin D..(2017).Contribution of feldspar and marine organic aerosols to global ice nucleating particle concentrations.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(5). |
MLA | Vergara-Temprado, Jesus,et al."Contribution of feldspar and marine organic aerosols to global ice nucleating particle concentrations".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.5(2017). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论